Abstract
A new type of two-stage compression refrigeration system with primary throttling intermediate complete cooling is proposed in this paper. The defrost cycle of this system is still a two-stage compression cycle, and the refrigeration system can provide two evaporation temperatures at medium temperature or low temperature. Studies have shown that R410A is best suited for this system; increasing the evaporation temperature of 2 °C can increase COP by 4.3%; lowering the condensation temperature of 2 °C can increase COP by 6.4%; the COP of the system decreases with the increase of cooling capacity of the low-temperature stage but increase with the increase of the cooling capacity of the medium-temperature stage and the range of the system COP when the cooling capacity changes is obtained.
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Xuan, C., Yang, Y., Li, R. (2020). A New Two-Stage Compression Refrigeration System with Primary Throttling Intermediate Complete Cooling for Defrosting. In: Wang, Z., Zhu, Y., Wang, F., Wang, P., Shen, C., Liu, J. (eds) Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019). ISHVAC 2019. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-9524-6_53
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DOI: https://doi.org/10.1007/978-981-13-9524-6_53
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